Centenart of the nethelands telegraph service :exhibition at the hague july 19 th through september 28 th 1952 : bulletin
Sala sit siemens : sezione delle telecomunicazioni / Alberto Bandini Buti
List of oceanic depths and serial temperature observationd : received at the admiralty during the year 1895, from H.M surveying ships, indian marine survey and british submarine telegraph companie / Hydrographic Department
List of oceanic depths and serial temperature observationd : received at the admiralty during the year 1896, from H.M surveying ships, indian marine survey and british submarine telegraph companie / Hydrographic Department
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